A ball-vertex approach to r-refinement for accuracy enhancements in CFD Calculations

 

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dc.contributor.author Jones, Bevan W S
dc.contributor.author Malan, Arnaud G
dc.contributor.author van Rooyen, Jacobus A
dc.date.accessioned 2016-08-15T10:22:30Z
dc.date.available 2016-08-15T10:22:30Z
dc.date.issued 2015
dc.identifier.citation Jones, B. W. S., Malan, A. G., and van Rooyen, J. A. 2015. A ball-vertex approach to r-refinement for accuracy enhancements in CFD Calculations. University of Cape Town en_ZA
dc.identifier.uri http://hdl.handle.net/11427/21233
dc.description.abstract Presented in this paper is an accuracy enhancing r-refinement scheme based on the ballvertex method [1, 2]. Due the success of the method in mesh movement, this work seeks to extend its use to error minimization for computational fluid dynamics calculations. To this end, element edges are loaded via error driven monitor functions. The latter are estimated from both field gradients and curvature. Boundary nodal movement is facilitated via the use of automated B`ezier surface reconstruction. The application study involves both analytical as well as industrial test-cases. The latter involves 2D and 3D transonic flow calculations. When compared with the mesh independence solution, an error reduction in the computed coefficient of lift and moment of 60% was achieved even on relatively coarse meshes and close to an order of magnitude on finer meshes. Finally, a mesh deformation, moving boundary, problem was completed to demonstrate duality as both a mesh optimisation and deformation tool. en_ZA
dc.language eng en_ZA
dc.subject.other r-refinement
dc.subject.other Mesh Movement
dc.subject.other Truss Networks
dc.subject.other Ball-Vertex Method
dc.subject.other moving boundary problems
dc.title A ball-vertex approach to r-refinement for accuracy enhancements in CFD Calculations en_ZA
dc.type Working Paper en_ZA
dc.date.updated 2016-08-15T10:21:11Z
uct.type.publication Research en_ZA
uct.type.resource Working paper en_ZA
dc.publisher.institution University of Cape Town
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Jones, B. W. S., Malan, A. G., & van Rooyen, J. A. (2015). <i>A ball-vertex approach to r-refinement for accuracy enhancements in CFD Calculations</i> University of Cape Town. Retrieved from http://hdl.handle.net/11427/21233 en_ZA
dc.identifier.chicagocitation Jones, Bevan W S, Arnaud G Malan, and Jacobus A van Rooyen <i>A ball-vertex approach to r-refinement for accuracy enhancements in CFD Calculations.</i> University of Cape Town, 2015. http://hdl.handle.net/11427/21233 en_ZA
dc.identifier.vancouvercitation Jones BWS, Malan AG, van Rooyen JA. A ball-vertex approach to r-refinement for accuracy enhancements in CFD Calculations. 2015 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/21233 en_ZA
dc.identifier.ris TY - Working Paper AU - Jones, Bevan W S AU - Malan, Arnaud G AU - van Rooyen, Jacobus A AB - Presented in this paper is an accuracy enhancing r-refinement scheme based on the ballvertex method [1, 2]. Due the success of the method in mesh movement, this work seeks to extend its use to error minimization for computational fluid dynamics calculations. To this end, element edges are loaded via error driven monitor functions. The latter are estimated from both field gradients and curvature. Boundary nodal movement is facilitated via the use of automated B`ezier surface reconstruction. The application study involves both analytical as well as industrial test-cases. The latter involves 2D and 3D transonic flow calculations. When compared with the mesh independence solution, an error reduction in the computed coefficient of lift and moment of 60% was achieved even on relatively coarse meshes and close to an order of magnitude on finer meshes. Finally, a mesh deformation, moving boundary, problem was completed to demonstrate duality as both a mesh optimisation and deformation tool. DA - 2015 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2015 T1 - A ball-vertex approach to r-refinement for accuracy enhancements in CFD Calculations TI - A ball-vertex approach to r-refinement for accuracy enhancements in CFD Calculations UR - http://hdl.handle.net/11427/21233 ER - en_ZA


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